1972 GMC C1500 ENGINE COMPRESSION

1972 GMC C1500
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PEANUTBUTTERNJELLY
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Engine Performance problem
1972 GMC C1500 V8 Two Wheel Drive Automatic
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I JUST FINISHED REBUILDING MY V8 ENGINE,AND I;M HAVING A COMPRESSION PROBLEM.I TOOK READINGS ON ALL CYLINDERS.(#1)120psi,(#2)0psi,(#3)0psi,(#4)140psi,(#5)105psi,(#6)0psi,(#7)120psi,(#8)130psi so could you please tell me why three of my cylinders have no psi and how can i fix the problem thank you
Jul 8, 2008 at 10:27 PM
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DOCHAGERTY
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It might be that you have adjusted the valves too tight and they are not closing all the way, try readjusting them and let us know.
Jul 8, 2008 at 10:39 PM